Valve's online games platform Steam has added a refund policy. According to a newly published page, you can request a refund for nearly any purchase on Steam â for any reason..
ABS pipe and fittings are made from a thermoplastic resin called Acrylonitrile-Butadiene-Styrene (ABS for short). ABS PIPING SYSTEMS:
The first plastic pipe to be used was ABS, which is black. Since the 1970s ABS has generally been replaced by white-or cream-color PVC pipe. In rare cases drainpipes are made of copper. Drainpipes must be sloped, usually about 1/4 inch per foot, so water can run freely through them.